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  4. [Form 4] CoreWeave, Inc. Insider Trading Activity

Magnetar funds sell 6,564 CoreWeave (CRWV) shares at $117.84

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

CoreWeave, Inc. insider filing shows Magnetar-affiliated funds selling a modest block of shares while retaining large positions. On April 30, 2026, entities advised or managed by Magnetar Financial LLC reported open-market sales totaling 6,564 shares of CoreWeave Class A Common Stock at $117.84 per share, all held indirectly through various investment funds.

After these transactions, the filing shows substantial remaining indirect holdings in multiple vehicles, including positions such as 19,886,405 shares and 7,789,016 shares of Class A Common Stock. The footnotes state that the Magnetar funds and related entities, including Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, disclaim beneficial ownership of these shares except to the extent of their pecuniary interest.

Positive

  • None.

Negative

  • None.
Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role null | null | null | null
Sold 6,564 shs ($774K)
Type Security Shares Price Value
Sale Class A Common Stock 557 $117.84 $66K
Sale Class A Common Stock 1,764 $117.84 $208K
Sale Class A Common Stock 232 $117.84 $27K
Sale Class A Common Stock 24 $117.84 $3K
Sale Class A Common Stock 516 $117.84 $61K
Sale Class A Common Stock 708 $117.84 $83K
Sale Class A Common Stock 887 $117.84 $105K
Sale Class A Common Stock 201 $117.84 $24K
Sale Class A Common Stock 755 $117.84 $89K
Sale Class A Common Stock 466 $117.84 $55K
Sale Class A Common Stock 375 $117.84 $44K
Sale Class A Common Stock 79 $117.84 $9K
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 4,785,278 shares (Indirect, Footnotes)
Footnotes (1)
  1. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, CW Opportunity LLC, Longhorn Special Opportunities Fund LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T LLC, the general partner of Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities), and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (collectively, the "Magnetar Funds"). Magnetar Capital Partners LP ("Magnetar Capital Partners") is the sole member and parent holding company of Magnetar Financial. Supernova Management LLC ("Supernova Management") is the general partner of Magnetar Capital Partners. The administrative manager of Supernova Management is David J. Snyderman, a citizen of the United States of America. Each of the Magnetar Funds, Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaims beneficial ownership of these shares of Common Stock of the Issuer, except to the extent of its or his pecuniary interest therein. These securities are held directly by CW Opportunity 2 LP. These securities are held directly by CW Opportunity LLC. These securities are held directly by Magnetar Alpha Star Fund LLC. These securities are held directly by Magnetar Capital Master Fund, Ltd. These securities are held directly by Magnetar Constellation Master Fund, Ltd. These securities are held directly by Magnetar Lake Credit Fund LLC. These securities are held directly by Magnetar Longhorn Fund LP. These securities are held directly by Magnetar SC Fund Ltd. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities. These securities are held directly by Magnetar Xing He Master Fund Ltd. These securities are held directly by Purpose Alternative Credit Fund - F LLC. These securities are held directly by Purpose Alternative Credit Fund - T LLC. These securities are held directly by Longhorn Special Opportunities Fund LP.
Shares sold 6,564 shares Aggregate open-market sales of Class A Common Stock on April 30, 2026
Sale price $117.84 per share Price for reported CoreWeave Class A Common Stock sales
Post-transaction holding example 1 19,886,405 shares Indirect Class A Common Stock position following one reported sale
Post-transaction holding example 2 7,789,016 shares Another indirect Class A Common Stock position after transactions
Holding-only entry 1,973,782 shares Indirect Class A Common Stock position shown as a holding entry
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
beneficial ownership financial
"disclaims beneficial ownership of these shares of Common Stock of the Issuer"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"except to the extent of its or his pecuniary interest therein"
ten percent owner financial
""is_ten_percent_owner": 1"
indirect ownership financial
""ownership_type": "indirect", "ownership_code": "I""
investment adviser financial
"Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser"
An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Magnetar Financial LLC
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
CoreWeave, Inc. [ CRWV ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/30/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Common Stock04/30/2026S557D$117.844,785,278IFootnotes(1)(2)(3)(4)
Class A Common Stock04/30/2026S1,764D$117.8419,886,405IFootnotes(1)(2)(3)(5)
Class A Common Stock04/30/2026S232D$117.841,271,251IFootnotes(1)(2)(3)(6)
Class A Common Stock04/30/2026S24D$117.84269,506IFootnotes(1)(2)(3)(7)
Class A Common Stock04/30/2026S516D$117.844,354,400IFootnotes(1)(2)(3)(8)
Class A Common Stock04/30/2026S708D$117.845,428,553IFootnotes(1)(2)(3)(9)
Class A Common Stock04/30/2026S887D$117.847,784,856IFootnotes(1)(2)(3)(10)
Class A Common Stock04/30/2026S201D$117.84923,877IFootnotes(1)(2)(3)(11)
Class A Common Stock04/30/2026S755D$117.847,779,016IFootnotes(1)(2)(3)(12)
Class A Common Stock04/30/2026S466D$117.842,571,478IFootnotes(1)(2)(3)(13)
Class A Common Stock04/30/2026S375D$117.842,523,561IFootnotes(1)(2)(3)(14)
Class A Common Stock04/30/2026S79D$117.84763,518IFootnotes(1)(2)(3)(15)
Class A Common Stock1,973,782IFootnotes(1)(2)(3)(16)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
1. Name and Address of Reporting Person*
Magnetar Financial LLC
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Magnetar Capital Partners LP
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Supernova Management LLC
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Snyderman David J.
(Last)(First)(Middle)
1603 ORRINGTON AVENUE
13TH FLOOR
(Street)
EVANSTON ILLINOIS 60201
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, CW Opportunity LLC, Longhorn Special Opportunities Fund LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T LLC, the general partner of Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities), and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (collectively, the "Magnetar Funds").
2. Magnetar Capital Partners LP ("Magnetar Capital Partners") is the sole member and parent holding company of Magnetar Financial. Supernova Management LLC ("Supernova Management") is the general partner of Magnetar Capital Partners. The administrative manager of Supernova Management is David J. Snyderman, a citizen of the United States of America.
3. Each of the Magnetar Funds, Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaims beneficial ownership of these shares of Common Stock of the Issuer, except to the extent of its or his pecuniary interest therein.
4. These securities are held directly by CW Opportunity 2 LP.
5. These securities are held directly by CW Opportunity LLC.
6. These securities are held directly by Magnetar Alpha Star Fund LLC.
7. These securities are held directly by Magnetar Capital Master Fund, Ltd.
8. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
9. These securities are held directly by Magnetar Lake Credit Fund LLC.
10. These securities are held directly by Magnetar Longhorn Fund LP.
11. These securities are held directly by Magnetar SC Fund Ltd.
12. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities.
13. These securities are held directly by Magnetar Xing He Master Fund Ltd.
14. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
15. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
16. These securities are held directly by Longhorn Special Opportunities Fund LP.
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC, which is the General Partner of Magnetar Capital Partners LP, which is in turn the Sole Member of Magnetar Financial LLC05/01/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC, which is the General Partner of Magnetar Capital Partners LP05/01/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC05/01/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman05/01/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

Who are the reporting persons in the CoreWeave (CRWV) Form 4 filing?

The filing lists Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman as reporting persons and ten percent owners. They report positions held through multiple Magnetar-managed funds and related investment entities.

How many CoreWeave (CRWV) shares do Magnetar-managed entities still hold after the sales?

After the reported sales, the Form 4 shows large remaining indirect positions, including 19,886,405 shares and 7,789,016 shares of Class A Common Stock in certain vehicles. These figures reflect holdings of specific entities rather than a consolidated total.

At what price were the CoreWeave (CRWV) insider sales executed?

The reported insider sales were executed at $117.84 per share for CoreWeave Class A Common Stock. Multiple small transactions on April 30, 2026 used this same sale price across the different Magnetar-managed entities involved.

What does it mean that Magnetar entities disclaim beneficial ownership of CoreWeave (CRWV) shares?

The filing states that the Magnetar funds and related entities disclaim beneficial ownership of the issuer’s common stock except to the extent of their pecuniary interest. This means they do not claim full economic or voting control beyond their financial stake.